Rock-drilling machine



(Model) A. PIECE.

ROCK DRILLING MACHINE.

. 110! 251,681. Patented Dec. 27,1881

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AUGUST PIECE, OF DENVER, COLORADO.

ROCK-DRILLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 251,631, dated December 27, 1881.

Application filed May 13, 1881.

To all whom it may concern:

Be it known that I, AUGUST PIROH, of Denver, in the county of Arapahoe and State of Colorado, have invented a new and Improved Rock-Drilling Machine, of which the following is a specification.

The object of my invention is to combine numerous drills in such manner that they can be operated singly, or two or more, so that a hole may be drilled of the size desired and according to the nature of the material operated upon.

The invention consists in certain novel features of construction and combination, hereinafter described and claimed with reference to the drawings.

In the drawings, Figure l is a front elevation of the apparatus as fitted with a single drill-stock. Fig. 2 is a side elevation of the same"; Fig. 3, a front elevation, and Fig. 4 a side elevation, of the attachment for using numerous drills and Fig. 5 is a detail view.

Similar letters of reference indicate corresponding parts.

The supports of the apparatus are to be of suitable character. As shown, they consist of side frames, A A, of X form. On these frames is fitted a cross-shaft, a, that is divided at the center and connected by a box, I). On shaft to is hung a frame, 0,.a'nd through the box I) and upper end of frame cpasses the drill-rod d. The drill-rod, frame, and their attached parts are thus sustained by shaft a on the frame A, and may be swung to'the angle required in the work.

Around the drill-rod, above the box b, is a sleeve, 6, carryinga bevelgear wheel, f, that meshes with a pinion, g, on the shaft to. The shaft a carries also a gear-wheel, h, meshing with a pinion, i, that is upon a cross-shaft, 7r, fitted at the lower end of frame 0. On shaft is is fixed a balance-wheel, k, and also a cam, I, that is between two disks, m an, fixed on a sleeve, 1, which is on the drill-rod.

The drill-stock consists of a sleeve formed with an external screw-thread passing through a disk-nut, '0, that is sustained by rods 0 from disk m. The sleeve 11. is upon the lower end of rod d, and has a pin, n, engaging a groove in the rod, as shown in Fig. 5. On the upper end of rod dis a hand-wheel for use in turning (Model.)

the rod to feed the drills. The drills or cutters are carried by a disk,p, on the lower end of the stock 1. Three cutters are shown but there may be more or less.

A crank-handle, a, is shown as applied to the shaft a. This is used when the machine is operated by hand. It can also be operated by power appliedto shaft'a or to the sleeve '6. At g is shown a horse-power sweep for operating the machine. In either case, the shaft is being revolved by the connecting-gearing shown, the cam l, acting on disk m, raises the disks m 0 and drill-stocks, which parts fall again by their weight. By turning the rod 01 the stock n is turned and fed downward in the nut 0,'whichcan be done without stopping the machine.

For drilling in soft rock or other material not requiring to be blasted, the attachment shown in Figs. 3 and 4, and next described, is to be used.

D is a frame which is to be suspended by attachment to the lower end of stock n, drillp being first removed; and E is a lower frame, suspended from frame D by a center screw-rod,

The frame E carries a cross-shaft, 1', on

which there are cams 1" 1' W, a balance-wheel, T and a pinion, q.

A ratchet-wheel, 8, carried by a shaft, 8, at the lower end of frame E, is formed with cogs on its rim engaging .the pinion q, and with ratchet-teeth on its face engaged by a pawlarm, t, which is hung loosely on the shaft S. A spring-arm, S also hung on the shaft and connected with pawl-arm t, retains the latter in contact with the wheel. From the pawl-arm t a rod, t, passes to and is connected to the disk m, so that the pawl, and consequently the wheel 8 and shaft 1, shall be operated by the disk m.

The frame E is formed with upper and lower side flanges or plates, u, through which drills 1: pass. There are two drills, v, at each side, sustained by disks a, that are above the cams r W, and the disks u and drill-rods are threaded, so that the rods may be adjusted in the disks.

On the center rod, q, is a tubular drill-stock, to, having a flange, 20, at its upper end above the cam T The frame E, with its attachments, is to be suspended at the depth required, and the rod t, passing down from the upper frame, will opcrate the drills. This attachment, it will be seen, combines five drills, counting the center drills as one. The drill-stock w engages the rod q by a pin and groove, as before described, and the rod q carries a pinion, c, at its upper end, engaging similar pinions, (1 that are fixed on drill-rods '17, so that by turning rod q the drills are simultaneously fed downward. Rod (1 will be turned to feed the drills by a worm or screw on a cross-shaft fitted above the plate to, on which shaft there will be apulley driven by a belt or chain from a similar pulley on shaft 0".

On shaft a, within the frame D, is a chainwheel, a from which an endless chain, b passes around the ratchet-wheel s. The chain b carries buckets, which act to gather and earry up the material loosened by the drills. The chain is moved by the ratchet-wheel.

By this construction the apparatus can be used with one, two, or more drills, according to the size of hole required and the character of material operated on.

Having thus fully describedmy invention, I claim as new and desire to secure by Letters Patent 1. The combination of frame 0, screw rod d, sleeve 1, provided with disk m, nut 0, carried by sleeve 1, screw drill-stock it, provided with pin 02, the operating-shaft 7c, and cam 1, substantially as shown and described, for operation as set forth.

2. The shaft a and gear-wheel h, combined with the shaft 70, cam 1, disk on, and sleeve 1, from which the drill-stock is suspended, substantially as and for the purposes set forth.

3. The combination,with the drill-operating shaft k and feed-rod, of the sleeve 6, sweep g and gears f g, substantially as and for the purposes set forth.

.4. The combination of the main frame A, divided shaft a, box I), suspended frame 0, sustaining the drills, and the adjusting-rod 01, passing through the box b and frame 0, substantially as shown and described.

5. The frame E, suspension -rod (1, shaft 1", provided with cams r r W, drill-stock w on rod q, drill-rods v, disks a, pinion c, ratchet-wheel s, pawl 1, rod t, and reciprocating disk m, substantially as shown and described, combined for operation as set forth.

6. The combination, with the center-drill stock to, titted for reciprocation by the shaft 1, of drill-rods 1:, fitted for simultaneous operation by cams on the operating-shaft of the center drill, substantially as shown and described.

7. The combination of the screw-rod q, tubular drill-stock w, drills o, disk-nuts a, and pinions 0 d together and with the sustainingframe and drill-operating mechanism, substantially as shown and described.

8. The chain-wheel a", chain b and buckets, in combination with the drill-sustaining frame E and operating-wheel s, substantially as and for the purposes set forth.

AUGUST PIRGH.

Witnesses HENRY BIEGEL, JNo. C. KEITH. 

